Alexis a



A. A. ZAKHAROFF.

REMOVABLE FORM FOR CONCRETE STRUCTURES.

APPLICATION FILED MAS/2|. 1919.

Patented Sept. 23,1919.

. INVENTO 1%1417/ 2442 4/1 in such a way,

Structure together (1) ALEXIS A. ZAKHABOFF, OF NEW YORK, N. Y.

REMOVABLE FOR CONQRETE STRUCTURES.

Specification of Letters Patent.

Application filed May 21, 1919. Serial No; 298,534.

To all whom it may concern:

Be it known that I, ALEXIS A. ZAKHARoFr', citizen of Russia, and resident of the city of NewYork, in the county of New York and State of New tain new and useful Improvements in the RemovableForms for Concrete Structures, of which the following is a specification.

My invention relates to the molding forms, as may be used for the erection of the concrete structures, and has a particular reference to such forms, which can be taken apart upon completion of the work and used over again for a similar work. It has a further reference to such molding are composed of standard parts, suitable to be joined together in a variety of forms to suit various practical requirements.

Heretofore the forms for the concrete structures were made mostly of ordinary wooden boards and stakes, joined together that upon completion of the molding Work, most of the material and parts of the molds were useless for any further service for molding forms.

With my removable molds it is possible to erect concrete structures of any practical size and shape, using over and over again my standardized component parts of the forms. 4

My invention is more fully represented on the accompanying drawings, in which-' Figure '1 is a horizontal section through my assembled form, filled with the concrete, Fig. 2 is aside elevation of same, and Fig. 3 is" an end view, and'Fig. 4 represents a modification.

My form consistsof I or T beams, which I employ preferably as vertical posts, and.

which also serve to hold firmly the whole To the flanges 2 of these beams the boards 3 are fastened by means of the U-shaped clamps 4. These clamps pass through the openlngs 5 in the beams 1 and are pressedagainst the boards by means of the wedges 6'. The ends of the boards 3 have metal tips or reinforcements 7, which are formed iusuch a way, that they present a smooth surface with 2, against which they are clamped.

These boards can be made in some standard sizes, also the beams, so that with these parts any desired concrete structure can be erected.

Fig. 4; represents a modification, in which reinforcements on the ends of theboards York, have invented cerforms, which the flanges to force said clamps thereby joining them firmly and detachablyhave projections 8, which fit corresponding thereby holding to V.

be detachably joined with the flanges of said 2. In a removable form for the concrete structures, the combination with a of beams having central webs and Patented se as, an. I

plurality flanges at an approximately right angle with said webs, openings in said webs, a plurality of 4 2 boards, metal reinforcements on the ends of semi boards adapted to be detachably joined with the flanges of said beams, and,

clamps passing through the openings in said ams and engaging the ends of said boards.

3. In a removable form for the concrete structure, the combination with a plurality of beams having central an approximately right angle with said Webs, openings in said webs, a pluralit of boards, metal reinforcements on the on s of said boards. depressions in said reinforcements adapted to fit said flanges so as to present an approximately smooth surface with said flanges toward the concrete struc ture, and clamps, passing through the openings in said beams and detachably fastening said boards with said beams.

In aremovable form for the concrete structures the combination with a plurality of beams having central webs and flanges at right angle with said webs, openings in said webs, a plurality of boards, metal reinforcements on the ends of said boards, depressions in said reinforcements adapted to fit said flanges so as to present an approximately smooth surface with said flanges toward the concrete structure, clamps passing through said openings int-he beams and en the ends of said boards, and wedges, adapted against said boards,

with said beams.

/ 5. In a removable form for the concrete structure, the combination with a plurality of beams having central Web and flanges at a right angle with said webs, openings in. said webs, a plurality of boards, metal reinforcements on the ends of said boards, depressions in said reinforcements adapted to fit said flanges so as to present an approximately smooth surface with said flanges toward the concrete structure, clamps passing through said openings in the beams, and

wedges, adapted to force said clamps against said boards, thereby joining them firmly and detachably with said beams, projections on said reinforcements, and grooves on said elamps, said grooves adapted to fit said projeotions.

Signed at New York, in the county of New York and State of New York, this 8th day of May, A. D, 1919. 4

ALEXIS A. ZAKHAROFF. 

